In much the same way Keyseys defines kisses, Sexy Keyseys correctly identifies the act of asking for a sexual favor. Usually is only asked in the form of a text message, however may be spoken aloud to a significant other. Texting or saying Sexy Keyseys, is regarded as the most polite way to ask for a sexual favor. Sexy Keyseys is not just the act of intercourse; can be used to define fellatio or cunnilingus.